Electric stove for heating and cooking



Jan. 17, 1950 J. s. THIMBLETHORPE ET AL ELECTRIC sTovE FOR HEATING ANDcooKNG 6 Sheets-Sheet l Filed March 8, 1946 Jan. 17, 1950 E s.THHMBLETHQRPE Er Al.. @4949843 ELECTRIC s'rovE FCR HEATING AND COOKINGFiled March 8, 194e Jan 17, 1950 J. s. THlMBLx-:THQRPE Er AL 494,43

ELECTRIC sTovE FOR HEATING AND cooxzms 6 Sheeis-5heet 3 Filed March 8,1946 Invenors Jan. W9 195@ J. s. THIMBLETHQRPE mf* AL 2,494,843

ELECTRc sTovE FOR HEATING AND 000mm 6 Sheets-Sheet 4 Filed March 8,.1946

Jan. 17, 1950 J. S. THIMBLETHORPE ET AL ELECTRIC STOVE FOR HEATING ANDCOOKING Filed March 8, 1946 6 Sheets-Sham. 5

l L 2a l./-7

Ti xm .v

.1. s. THIMBLETHORPE ET'AL 2,494,843

ELECTRIC sTOvE EOR HEATING AND COOKING 6 Sheelts-Sheet 6 ,llHuwHWnwI/MwumuhmmMHNNHHHNM- ,.If I I l Jan. 17, 1950 Filed March 8,1,946

Patented jan. 17,195() ELECTRIC STOVE FOR HEATING AD COOKING June SylviaThimblethorpe and Wilfred Sylvester Thimblethorpe, London, EnglandApplication March 8, 1946, Serial No. 653,058 In Great Britain March 20,1945 (Cl. 21S- 34) 14 Claims.

This invention relates to electrical heating stoves of the combinationtype which can be used either for room` warming or readily convertedinto hot plates, cookers or grillers.

One object of the invention is to provide a stove of this type withimproved cooking arrangements including an oven.

Another object of the invention is to provide an electrical heatingstove with electrical heating elements which can be moved from aroom-warming position into a cooking or grilling position and into afurther position wherein the unit heats an oven.

A further object of the invention is to provide an electrical heatingstove having an outer casing tted with a lid, an oven having an openingin the casing front and an electrical heating unit forming the oven doorand acting as a roomwarming unit so arranged that the lid can be raisedto form a splash back and the electrical heating unit moved intoposition adjacent to the lid for frying purposes while in a furtherposition, the heating unit can be moved to heat the oven and the lidmoved into position to form the oven door.

A further object of the invention is to provide an electrical heatingstove having an electrical heating unit which can be arranged in oneposition wherein the heating elements are exposed on the outside of thestove to heat a room or the like, in another position wherein theheating elements are exposed on the top of the stove to form a grill orfryer and in another position wherein the heating elements are exposedon the inside of the stove to heat an oven.

A still further object of the invention is to provide an electricalheating unit for use in an electrical stove of the combined room warmingand cooking type comprising a metal box containing a series of heatingresistance elements mounted on refractory material, the elements beingexposed through an opening in the front side of the box while the backof the box is adapted to form a hot plate or a heat storage plate.

Another object of the invention is to provide an electrical heatingstove of the combined type referred to with an oven adapted to be heatedby a movable electrical heating unit and having a series of electricalcontact points to which one or more additional electrical heating unitscan be connected. Another object of the invention is to provide anelectrical heating stove of the combined type referred to with a lidwhich can be removed from its normal position covering the top of thestove casing into an upright position to form a splashback and movedinto a further position in which it forms an oven door.

According to the invention the stove comprises an outer case preferablyof rectangular shape and containing an oven having an opening in thefront wall of the case. The top of the case is fitted with a lid. Amovable electrical heating unit is provided which is so mounted thatwhen the stove is used for room warming the unit forms the oven door byclosing the oven opening in the 'front wall of the casing. For cookingpurposes the lid of the outer case is raised-and the unit is lifted andpushed back over the top of the oven so that it can be used with theheating elements exposed for frying and the like, the raised lid of thecasing forming a splash back. If the oven is to be used, the unit ismoved from the frying position and swung over on itself so that theheated face used for frying now heats the oven. Further the casing lidis so mounted that it can be swung over the front of the casing to formthe oven door previously formed by the heating unit.

In a preferred arrangement the heating unit comprises a back plate ofmetal with the electrical heating elements mounted on the front thereof.With such an arrangement the heating elements are in the front when inthe roomwarming position and also exposed on the top in the fryingposition. In the oven position the back plate is on top and as thisplate is continually heated by the heating elements in all the positionsit forms a heat storage plate and when in position over the oven can beused as a hot or boiling plate. As it is a storage plate, when usedsimply as a hot plate the supply of heating medium can be reduced.

Electrical heating elements are also xed in the bottom of the oven andcome into operation when the oven is being used independently of thosein the movable unit.

To enable the invention to be fully understood it will now be describedby reference to the accompanying drawings, in which- Fig. 1 is aperspective View of a stove constructed according to one form of theinvention, and

Fig. 2 is a sectional side elevation thereof drawn to a larger scale andshowing the stove arranged as a room warming-unit.

Fig. 3 is a similar view to Fig. 2 but showing the stove arranged forfrying or the like, and

Fig. 4 is a further view showing the stove with the oven in use.

Fig. 5 is a sectional elevation on line 5--5 of Fig. 4.

Fig. 6 is a sectional View of a detail of the oven showing an additionalor alternative method of connecting the heating units.

Fig. 7 is a sectional side elevation of the stove showing a method ofremoving the oven.

Fig. 8 is an electrical diagram for the electrical heating units used inthe stove.

As shown the stove is made of sheet metal and comprises an outer casinghaving a back wall I0, side walls II, base I2 and partitions I3 parallelto the side walls II. The base I2 is tted with feet I4 which may beadjustable in height in any convenient manner. An oven I5 is suspendedbetween the partitions I3 as seen best in Figs. 5 and 7.

In the preferred construction the partitions I3 are provided with slitsand the metal is forced inwardly at the slits to form guides I5a, thesides of the oven having hanged or turned over edges I6 which engage theguides. This construction enables the oven to be removed for cleaningpurposes as shown in Fig. 7. Obviously other forms of lugs or the likemay be provided on the partitions to support the ilanges or the like onthe oven.

The stove is tted with a lid I'I which is formed with side lugs I8 towhich pivot pins I9 carried by a pair of links 20, one on each side ofthe lid, are attached. The pivot pins I9 ride in slots 2| formed in thepartitions I3 and the lower ends of the links are pivotally attached topins 22 mounted in the partitions I3 adjacent to the back wall of thecasing and below the bottom of the oven. The oven front is open and inthe arrangement shown the front is closed by an electrical heating unit23 (Fig. 2) which closes the upper part and a door 24 which closes thelower part. The door 24 is carried on pivots 25 sliding in slots 26 inthe lower parts of the partitions I3 below the oven bottom and can beopened and swung into the position shown in chain lines, Fig, 2, wherethe top of the door rests on a stop 21.

The electrical heating unit 23 is of any usual construction andcomprises a metal box having a back plate 28 and containing any desirednumber of resistance heating elements mounted on refractory blocks forexample as indicated at 29 (Fig. 1) so that the heating elements areexposed through the front opening 30 provided in the box. The heatingelements are not shown in the other gures for the sake of clearness. Theheating unit 23 is carried on pivot pins 3| sliding in slots 32 in thepartitions I3 and attached to links 33, the lower ends of the linksbeing carried on a spindle 34 mounted in the lower part of thepartitions I3 below the bottom of the oven as clearly shown in Fig. 5.The spindle 34 is arranged in front of the pivots 22 of the lid links 20so that in operation the links 20 pass over the links 33 withoutinterference.

With a stove constructed as above described the operation is as follows:

For room warming the parts are in the position shown in Fig. 2, the lidI'I and the lower oven door 24 are closed and the heating unit 23 closesthe upper part of the oven front with the heating elements exposed tothe room. A handle 35 is attached to one end of the heating unit and ifit is desired to cook by frying, for example, the lid I'I is raised andpushed back so that it is in a vertical position and acts as a splashback and the door 24 is opened to give access to the handle 35. Theheating unit 23 is swung outfil wardly and pushed back over the top ofthe oven into the position shown in Fig. 3 so that the heating elementsare exposed and can be used for frying or the like. In this position alug a on the top of the oven l5 engages a slot b provided in the backplate 28 of the heating unit.

l'i' it is desired to use the oven the heating unit 23 is moved from thefrying position and swung over on itself into the position shown in Fig.4 wherein the heating elements are now exposed to the oven, the lug aengaging the slot c provided on the front face of the unit. Further thelid I'I is swung over the front of the stove into position to close theupper part of the oven opening previously closed by the unit 23. Asshown in Figs. 2 to 5 the oven is provided with an independent heatingunit 23a similar to the unit 23 and this can be arranged in variouspositions in the oven. The front end of the unit 23a is fitted withtrunnions 35a which engage in slots 36 formed in the partitions I3 theslots having offset portions 3l and the sides of the oven havingcorresponding slots 38. The unit rests with its front end supported inthe offset slots and its rear end resting on a bar or lugs 39 providedon the back of the oven I5.

With this arrangement as shown in Fig. 4 the unit 23a can be lifted andmoved into one of three positions, the Lipper position shown in fulllines, a middle position and a bottom position as indicated in chainlines. If desired the door 24 can be opened and pushed under the ovenbottom as indicated in Fig. 2 and the heating unit 23a can be raised orswung into the door opening,

into the room warming position. Electric power may be supplied to theunit 23a by the leads 40. Alternatively as shown in Fig. 6 electricalcontact sockets 4I are attached to the back I0 and project into the ovenand the unit 23a is tted with a contact plug 42 so that it can beconnected with the appropriate socket. It will be understood that thesockets are connected to the stove wiring circuit and that any suitabletype of switch is used to control the units. The links carrying theupper unit 23 may be tubular and the spindle 34 may also be hollow andserve to contain the electric leads for supplying the unit. They may,however, be of any suitable construction.

It will be understood that the heating units may be connectedelectrically in any usual manner and that the stove is tted with theusual plug connection for a power circuit.

Fig. 8 shows a wiring diagram for one suitable arrangement of theheating units 23, 23a. Each unit comprises `two sets oi elements 43, 44connected to switches 45 the circuit arrangement being such that theunits can be separately operated and also each set of elements 43, 44can be independently operated or connected in parallel or series as isusual in electric heaters of this type.

In certain cases it may be desired to t the stove into an existingfitment designed to present a iiush surface to the room. In this casethe stove may be modified by omitting 'the swinging lid and providingthe stove casing with a sliding member which closes the casing above theheating unit in the room-warming position and which can be removed orpushed into position above the casing to expose the grilling or fryingspace on the top of the oven. The said member may also be moved intoposition to act as the oven door when the oven is used.

Further, the stove casing may be made in two parts, including the oven,slidably connected in such a manner that the front of the stove may bedrawn out into the `room to increase the internal dimensions when usedfor cooking and pushed back again into the flush front position whenused for room warming.

If desired the links 2n carrying the lid l1 and the links 33 carryingthe heating unit 23 may be connected to a suitable operating lever whichmay be operated by the foot or hand to move the parts into the desiredpositions without using the handle 35 on the heating unit.

It will be understood that the oven may be fitted with removable shelvesof any suitable type and further that the electrical heating units mayhave heating elements exposed on both sides, the back or cover platebeing omitted.

We claim:

1. A heating stove comprising walls defining an oven casing open at thetop, said walls including a front wall having an opening, a closuremember adapted when moved to one position to close the front wallopening and when moved to another position to close the oven top, means`for supporting said closure member in either of the said positions,said closure member supporting means comprising at least one linkpivotally connected at its upper end to the closure member and at itslower end to a iixed support whereby the upper end of the link may beswung from the front to the rear of the oven, an electrical heating unithaving a resistance heating element, means for pivotally suspending saidunit whereby said unit closes the said iront wall opening with theresistance element exposed to the space outside the oven, said pivotalsuspending means being displaceable from the front of the oven to therear thereof and arranged to permit the unit to be swung into a positionwhereby the unit extends across the top of the oven with the resistanceelements exposed to the interior of the oven and means for releasablyholding the said unit in position across the top of the oven.

2. A heating stove comprising walls defining an oven casing, said wallsincluding a front wall having an opening, a closure member adapted whenmoved to one position to close the iront wall opening and when moved toanother position to be displaced from said front wall opening, means forsupporting said closure member in either of the said positions, anelectrical heating unit having a resistance heating element, means forpivotally suspending said unit whereby said unit closes the said frontwall opening with the resistance element exposed to the space outsidethe oven, said unit suspending means comprising at least one linkpivotally connected at its upper end to the heating unit and at itslower end to a fixed support whereby said link may be swung from thefront to the rear of the oven and said heating unit may be moved into aposition across the oven top with the resistance element exposed to thespace above the oven and means for releasably holding the said unit inposition across the top of the oven.

3. A heating stove comprising walls defining an oven casing open at thetop, said walls including a front wall having an opening, a closuremember adapted when moved to one position to close the front wallopening and when moved to another position to close the oven top, meansfor supporting said closure member in either of the said positions, saidclosure member supporting means comprising at least one link pivotallyconnected at its upper end to the closure member and at its lower end toa xed support whereby the upper end of the link may be swung from thefront to the rear of the oven, an electrical heating unit having aresistance heating element, means for pivotally suspending said unitwhereby said unit closes the said front wall opening with the resistanceelement exposed to the space outside the oven, said unit suspendingmeans comprising at least one link pivotally connected at its upper endto the heating unit and at its lower end to a fixed support whereby theupper end of said last mentioned link may be swung from the front to therear of the oven and said heating unit may be moved into a positionacross the oven top and means for releasably holding the said unit inposition across the top of the oven.

' 4. A heating stove as claimed in claim 1 comprising an inner bodyformed by a base, a back and side walls, partitions between the sidewalls of the inner body and the side walls of the casing and inwardlydirected projections on the partitions adapted slidably to support theinner body, the arrangement being such that the inner body is removablethrough the opening in the front wall of the casing, the partitionsbeing provided with guide slots for the means pivotally supporting theheating unit.

5. A heating stove as claimed in claim 1 comprising an inner body formedby a base, a back and side walls, partitions between the side walls ofthe inner body and the side walls of the casing and inwardly directedprojections on the partitions adapted slidably to support the innerbody, the arrangement being such that the inner body is removablethrough the opening in the front wall of the casing, the partitionsbeing provided with guide slots for the means pivotally supporting theheating` unit.

6. A heating stove as claimed in claim 1 comprising an inner body formedby a base, a back and side walls, partitions between the side walls ofthe inner body and the side walls of the casing and inwardly directedprojections on the partitions adapted slidably to support the innerbody, the arrangement being such that the inner body is removablethrough the opening in the front wall of the casing, the partitionsbeing provided with guide slots for the means pivotally supporting theheating unit.

'7. A heating stove as claimed in claim 1 comprising an inner bodyformed by a base, a back and side walls, partitions between the sidewalls of the inner body and the side walls of the casing and inwardlydirected projections on the partitions adapted slidably to support theinner body, the arrangement being such that the inner body is removablethrough the opening in the front wall of the casing, the partitionsbeing provided with guide slots for the pivotal supporting means for theclosure member and for the pivotal supporting means for the heatingunit.

8. A heating stove as claimed in claim 2 cornprising an inner bodyformed by a base, a back and side walls, partitions between the sidewalls of the inner body and the side walls of the casing and inwardlydirected projections on the partitions adapted slidably to support theinner body, the arrangements being such that the inner body is removablethrough the opening in the front wall of the casing, the partitionsbeing provided with guide slots for the means pivotally supporting theheating unit.

9. A heating stove as claimed in claim 3 comprising an inner body formedby a base, a back and side walls, partitions between the side walls ofthe inner body and the side walls of the casing and;v inwardly directedprojections. on the partitions adapted slidably to support the innerbody; the arrangement being such that the inner body is removablethrough the opening iny the front wall oi' the casing, the partitionsbeing. provided with guide slots for the means pivotallyy supporting theheating unit.

10. A heating stove as claimed in claim. 1 com-k prising a casing havinga front wall provided` with two superimposed openings, a door forclosing the lower` of said openings,A and supporting means in the ovenbehind said' lower openingfor releasably holding an electrical heatingunit whereby said unit may be supported' at different levels inthe oven.

11. A heating stove as claimed in claim 3 comprising a casing having afront wall provided with two superimposed openings., a door. forVclosing the lower of said openings,` and supportingl means in the ovenbehind said lower opening forv releasably holding an electrical heatingunit whereby said unit4 may be supported at dierent levels in the oven.

12'. A heating stove as claimed in claim 1 comprising a casing having afront wall provided with two superimposed openings, a door for closingthe lower of said openings, supporting means in the oven behind saidylower opening for releasably holding an electrical heating unit wherebysaid unit may be supported at different levels in g the oven, and plugand socket contact meansl on the back of the oven and on the heatingunit.

13. A heating stove as claimed in claim 3 coniprising a casing having afront wall provided with two superimposed openings, a door for closingthe lower of said openings, supporting means inthe oven behind saidlower opening for releasably holding an electrical heating unit whereby,said unit may be supported at different levels in the oven, and plugandA socket contact means, on the back of the oven and on the heatingunit.

14. A heating stove as claimed in claim 1 comprising a casing having twosuperimposed openings and side walls provided with guide slots, a door.for closing the lower of said openings and pins on the door for slidablyengaging in the guide slots whereby the door may be caused to lie nat inthe bottom of the casing.

JUNE SYLVIA THIMBLETHORPE.

W'ILFRED SYLVESTER THIMBLETHORPE;

REFERENCES CITED The following references lc ol this patent:

UNITED STATES PATENTS are of record in the

